13P) EXPERIMENT STATION RECORD. 



of observers at these stations. The flags, pennants, and signals used by the Weather 

 Bureau in forecasting the weather and temperature are described and their use 

 explained. 



Use of Weather Bureau records in court, II. J. Cox ( U. S. Dept. Agr. Year- 

 hook 1908, pp. 308-812). — The extent to which Weather Bureau records are used in 

 court and their value as evidence are discussed. 



Meteorological observations, J. E. Ostkandeb, F. F. Henshaw, and (1. H. Patch 

 (Massachusetts Sta. Met. Buls. 184, 185, 186, pp. 4 each). — Summaries of observations 

 on pressure, temperature, humidity, precipitation, wind, sunshine, cloudiness, and 

 casual phenomena during April, May, and June, 1904. The data are briefly dis- 

 cussed in general notes on the weather of each month. 



Precipitation for twenty-nine years at Dodge City, Kans., E. D. Emigh 

 (Mo. Weather Rev., 32 (1904), No. 3, pp. 115, 116).— All available data for the period 

 are compiled. These do not show any increase in the rainfall of western Kansas 

 during the period. 



Summaries of temperatures, rainfalls, and sunshines, E. F. Ladd (North 

 Dakota Sta. Rpt. 1903, pp. 16-20). — Summaries are given of monthly and annual pre- 

 cipitation at Fargo during 1903 and 8 preceding years; on sunshine during 1903 and 4 

 preceding years; and evaporation from a water surface during May to September, 

 1903. 



The mean temperature during 1903 was 37.7°, the maximum 97° in June, the 

 minimum — 38° in February. The total rainfall was 23.81 in., which is 2.93 in. above 

 the average for the past 12 years. The percentage of sunshine was 41.18, having 

 steadily decreased from 48.8 per cent in 1899. "The total amount of water evaporated 

 from a water surface for the 5 months May to September, inclusive, was 41.87 in., 

 or an average of 8.37 in. per month, or a daily average of 0.263 in." 



Meteorological conditions in Norway, 1902 (Aarsber. Offent. Foranstalt. 

 Landbr. Freiume, 1902, pp. 659-679). — A summary of the average temperature of the 

 air and the precipitation for each month of the year, for the various weather stations 

 of Norway. — f. w. woll. 



Relation of precipitation to yield of corn, J. W. Smith ( U. S. Dept. Agr. Year- 

 book 1903, pp. 215-224, charts 8). — This article is mainly a series of charts showing 

 the close relation which exists between precipitation and yield of corn per acre dur- 

 ing a series of years in the region covered by Ohio, Indiana, Illinois, Iowa, Nebraska, 

 Kansas, Missouri, and Kentucky. 



A method of avoiding the danger of night frosts by application of frost 

 torches, S. Lemstrom (Svenska Mosskulturfor. Tidskr., 17 (1903), No. 6, pp. 420-428; 

 trans, from Milt. Ver. Ford. Moorkultur, 1903, No. 15-16). 



WATER— SOILS. 



[Analyses of water], P. Carmody (Ann. Rpt. (tort. Analyst [Trinidad], 1903-4, 

 pp. 8-10). — Tabulated analyses are reported of samples of the Port-of-Spain and San 

 Fernando water supplies taken at different dates, of miscellaneous samples of water, 

 and of rain waters, the latter showing monthly averages during 1903 of chlorin, total 

 ammonia, and nitrogen as nitrates. 



Methods used for controlling and reclaiming sand dunes, A. S. Hitchcock 

 (U. S. Dept. Agr., Bureau of Plant Industry Bui. 57, pp. 36, pis. 9, figs. 9).— This bul- 

 letin discusses the formation of sand dunes and methods of fixing the shifting sands, 

 and gives the results of a personal study of the methods of control employed in the 

 Netherlands, Denmark, (Termany, and France. The methods now in successful use 

 on a large scale are of three classes: 



" (1 ) Transplanting sand-binding plants upon the dunes, sufficiently thick to form 

 a living cover; (2) covering the entire surface with some inert material which pre- 



